Two ships are sailing in the sea on the two sides of a light house. The angle of elevation of the top of the light house as observed from the two ships are 30° and 45° respectively. If the light house is 100m high, the distance between the two ships is :(take √3=1.73)
A sum of Rs. 2000 amounts to Rs. 4000 in two years at compound interest. In how many years does the same amount becomes Rs. 8000.
If cosθ/1-sinθ + cosθ/1+sinθ = 4 then
the value of θ(0<θ<900) is
Suppose that the medians BD, CE and AF of a triangle ABC meet at G. Then AG: GF is
If in ΔABC, DE ||BC, AB = 7.5cm, BD = 6cm and DE = 2cm, then the length of BC in cm is :
If 9x2 + 16y2 = 60 and 3x + 4y = 6, then the value of xy is
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